body{font-family: "Microsoft YaHei";width: 100%;height: 100%;}
*{margin: 0; padding: 0; border: none;}
.background{position:absolute;width: 100%;height: 100%;background: #ffffff;}
header{height: 200px;width: 80%;margin: auto;margin-top: 10%;border: 1px solid red;}
header p{font-size: 50px;}

.container{width:80%;margin: auto;}
.childhood-photo{height: 600px;width: 60%;margin: 5% auto;border: 1px solid red;}
.container #first{font-size: 56px; color:red;}
.container #second{font-size: 50px; color:blue;}

.btn{outline: none; display: inline-block; padding: 6px 12px; margin-bottom: 0; font-size: 50px; font-weight: normal; line-height: 1.42857143; text-align: center; white-space: nowrap; vertical-align: middle; -ms-touch-action: manipulation; touch-action: manipulation; cursor: pointer; -webkit-user-select: none; -moz-user-select: none; -ms-user-select: none; user-select: none; background-image: none; border: 1px solid transparent; border-radius: 2px; font-family: "微软雅黑"; color:#fff;background: #3399FF;}
.btn-null{outline: none; display: inline-block; padding: 10px 12px; margin-bottom: 0; font-size: 50px; font-weight: normal; line-height: 1.42857143; text-align: center; white-space: nowrap; vertical-align: middle; -ms-touch-action: manipulation; touch-action: manipulation; cursor: pointer; -webkit-user-select: none; -moz-user-select: none; -ms-user-select: none; user-select: none; background-image: none; border: 1px solid #3399FF; border-radius: 2px; font-family: "微软雅黑"; color:#3399FF; background: #fff;}
.upload-photo-btn{height: 80px;width: 60%;margin: 5% auto;}

.page1{display: none;position: fixed;top:0;left:0;right:0;bottom: 0;background: rgba(0,0,0,0.6);}
.sex-selection{background: #ffffff;width: 80%;height: 1000px;margin: 30% auto;}


footer{width: 300px;height:300px;float: right;border: 1px solid red;}